According to the American Cancer Society, most men have levels under 4 nanograms per milliliter of blood (ng/ml).

根据美国癌症协会的说法，大多数男性PSA含量为4ng/ml。

youdao

According to the American Cancer Society, most men have levels under 4 nanograms per milliliter of blood (ng/ml).

根据美国癌症协会的说法，大多数男性PSA含量为4ng/ml。

youdao